CN109709450A - A kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple - Google Patents
A kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple Download PDFInfo
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- CN109709450A CN109709450A CN201811491765.4A CN201811491765A CN109709450A CN 109709450 A CN109709450 A CN 109709450A CN 201811491765 A CN201811491765 A CN 201811491765A CN 109709450 A CN109709450 A CN 109709450A
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- armoured thermocouple
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Abstract
The present invention provides a kind of method for rapidly positioning of anti-electric fault point of armoured thermocouple, comprising the following steps: 1) detects armoured thermocouple resistance to voltage；If 2) armoured thermocouple resistance to voltage is unqualified, determining armoured thermocouple, there are failures；3) voltage is applied to failure the two poles of the earth of the failure armoured thermocouple, pressure value is ascending to be slowly increased；4) it detects the failure armoured thermocouple and applies the leakage current generated after voltage at failure the two poles of the earth；5) after detecting leakage current, determine that temperature rises most fast position on shell；6) the anti-electric fault point of armoured thermocouple is determined according to the position.Method of the invention has good operability, provides convenience to do over again, greatly reduces product rejection rate, saves production cost, and at low cost, be advantageously implemented batch operation.
Description
Technical field
The present invention relates to thermocouple production technology fields, and in particular to a kind of anti-electric fault point of armoured thermocouple it is quick fixed
Position method.
Background technique
Armoured thermocouple is the thermocouple made of armoured thermocouple cable.It is to be set thermocouple wire insulation with oxide
In the practical assembly in metal sleeve through being compacted manufactured pliability.With small in size, temperature-sensitive is sensitive, pressure-resistant, shatter-proof, anti-corrosion
Erosion and can free bend the features such as.
Fig. 1 show a kind of conventional armoured thermocouple schematic diagram.The end face of the nickel base ironclad thermocouple of positive and negative electrode thermo wires
Shown in cross-sectional view, armoured thermocouple is that the insulation of positive and negative electrode thermo wires 3 is placed in shell 2 through pressing with insulation filler (oxide) 1
Flexible practical assembly made of reality, also built-in multiple groups positive and negative electrode thermo wires in shell 2.
Armouring electroheat pair is frequently encountered performance fault.Currently, armoured thermocouple resistance to voltage failure is temporarily without non-destructive testing
Method, once there is resistance to voltage failure in armoured thermocouple, due to structural, can not quickly determine that armoured thermocouple is specific
Fault point, therefore fault degree can not be assessed.No matter fault degree height, is typically only capable to scrap processing, can not do over again, cause very
Big material, human cost waste.
Summary of the invention
Therefore, in order to overcome the disadvantages of the above prior art, the present invention provides a kind of anti-electric fault point of armoured thermocouple
Method for rapidly positioning, comprising the following steps:
1) armoured thermocouple resistance to voltage is detected；
If 2) armoured thermocouple resistance to voltage is unqualified, determining armoured thermocouple, there are failures；
3) voltage is applied to failure the two poles of the earth of the failure armoured thermocouple, pressure value is ascending to be slowly increased；
4) it detects the failure armoured thermocouple and applies the leakage current generated after voltage at failure the two poles of the earth；
5) after detecting leakage current, determine that temperature rises most fast position on shell；
6) the anti-electric fault point of armoured thermocouple is determined according to the position.
Preferably, the step 3) further comprises that voltage application device is connected to the failure of the failure armoured thermocouple
The two poles of the earth apply voltage with failure the two poles of the earth to the failure armoured thermocouple.
Preferably, the step 3) further comprises that the pressure unit of pressure tester is connected the failure armoured thermocouple
Failure the two poles of the earth, with to the failure armoured thermocouple failure the two poles of the earth apply voltage.
Preferably, the step 4) further comprises that current detection means is connected to the failure of the failure armoured thermocouple
The two poles of the earth apply the leakage current generated after voltage to detect the failure armoured thermocouple at failure the two poles of the earth.
Preferably, the step 4) further comprises that the current detecting part of pressure tester is connected to the failure armouring heat
Failure the two poles of the earth of galvanic couple apply the leakage current generated after voltage to detect the failure armoured thermocouple at failure the two poles of the earth.
Preferably, the step 5) further comprises, using thermal infrared imager or temperature sensing device, detecting armouring thermoelectricity
Even skin temperature situation of change determines that temperature rises most fast position on shell according to the situation of change.
Preferably, the leakage current is not more than 30mA, and the pressure duration is 5s~120s.
Preferably, the leakage current is not more than 20mA, and the pressure duration is 5s~120s.
Preferably, the leakage current is not more than 8mA, and press duration 10s~20s.
Preferably, the leakage current is not more than 10mA, and press duration 30s~50s.
Compared with prior art, method of the invention has good operability, provides convenience to do over again, substantially reduces
Product rejection rate, saves production cost, and at low cost, is advantageously implemented batch operation.
Detailed description of the invention
Fig. 1 is a kind of armoured thermocouple cable schematic device.
Fig. 2 is the method for rapidly positioning schematic diagram of the anti-electric fault point of armoured thermocouple of the present invention.
Fig. 3 is the method for rapidly positioning flow diagram of the anti-electric fault point of armoured thermocouple of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
As shown in Figure 1, showing a kind of typical armoured thermocouple schematic device.1 is oxidation in one embodiment
Magnesium powder is enclosed in inside the armoured thermocouple shell 2.The two poles of the earth 3 are inserted into one end of armoured thermocouple shell.Side of the invention
Method be for the type armoured thermocouple device carry out fault point quickly position.
As shown in Figures 2 and 3, the method for rapidly positioning of the anti-electric fault point of armoured thermocouple of the present invention is shown.Specific packet
It includes, a kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple 4, comprising the following steps:
1) armoured thermocouple resistance to voltage is detected；
If 2) armoured thermocouple resistance to voltage is unqualified, determining armoured thermocouple, there are failures；
3) apply voltage by the failure the two poles of the earth of voltage application device 5 to the failure armoured thermocouple, pressure value is by small
To being slowly increased greatly；
4) it detects the failure armoured thermocouple and applies the leakage current generated after voltage at failure the two poles of the earth, until what is detected
Leakage current value is stablized；
5) after the leakage current value detected is stablized, determine that temperature rises most fast position on shell；
6) the anti-electric fault point of armoured thermocouple 4 is determined according to the position.
In step 5), lasting leakage current should be generated by applying voltage, and leakage current value cannot be too big or too small, too
Conference destroys thermocouple, and the heat of too small generation is not easy to identify.
In a preferred embodiment, a kind of method for rapidly positioning of anti-electric fault point of armoured thermocouple is disclosed, including
Following steps:
1) armoured thermocouple resistance to voltage is detected using pressure tester；
2) it determines that the resistance to voltage between the two poles of the earth of armoured thermocouple is unqualified, then determines that failure exists；
3) pressure tester is connected on failure the two poles of the earth of the failure armoured thermocouple；
4) equipment is opened, pressure value is ascending to be slowly increased, until leakage current is basicly stable and generally no greater than 20mA
It is advisable, and continues to press；
5) armoured thermocouple skin temperature situation of change is observed using thermal infrared imager, temperature rises most fast position and armouring
The anti-electric fault point of thermocouple 4 is corresponding.
In a preferred embodiment, above-mentioned pressure tester can be can provide stable adjustable voltage and can be monitored with any
The equipment of leakage current replaces.
In a preferred embodiment, leakage current can be 30mA, by different armoured thermocouple appropriate adjustments.
In a preferred embodiment, the pressure duration is 5s~120s, by different armoured thermocouple appropriate adjustments.
In a preferred embodiment, the method that hand light touch thermode shell can be used in thermal infrared imager replaces.
In a further embodiment, the method for rapidly positioning of the anti-electric fault point of a kind of armoured thermocouple, comprising the following steps:
1) armoured thermocouple resistance to voltage is detected using leakage tests equipment；
2) it determines that the resistance to voltage between the two poles of the earth of armoured thermocouple is unqualified, then determines that failure exists；
3) pressure tester is connected on failure the two poles of the earth of the failure armoured thermocouple；
4) equipment is opened, pressure value is ascending to be slowly increased, and until leakage current is basicly stable and no more than 8mA, and is held
Continuous pressure 10s~20s；
5) armoured thermocouple skin temperature situation of change is observed using thermal infrared imager, temperature rises most fast position and corresponds to
The anti-electric fault point of armoured thermocouple 4.
In a still further embodiment, a kind of method for rapidly positioning of anti-electric fault point of armoured thermocouple is disclosed, including with
Lower step:
1) armoured thermocouple resistance to voltage is detected using leakage tests equipment；
2) it determines that the resistance to voltage between the two poles of the earth of armoured thermocouple is unqualified, then determines that failure exists；
3) pressure tester is connected on failure the two poles of the earth of the failure armoured thermocouple；
4) equipment is opened, pressure value is ascending to be slowly increased, and until leakage current is basicly stable and no more than 10mA, and is held
Continuous pressure 30s~50s；
5) armoured thermocouple shell is touched using hand, the most hot position of feel is corresponding with the anti-electric fault point of armoured thermocouple.
In a still further embodiment, a kind of method for rapidly positioning of anti-electric fault point of armoured thermocouple is disclosed, including with
Lower step:
1) armoured thermocouple resistance to voltage is detected using pressure tester；
2) it determines that the resistance to voltage between the two poles of the earth of armoured thermocouple is unqualified, then determines that failure exists；
3) pressure tester is connected on failure the two poles of the earth of the failure armoured thermocouple；
4) equipment is opened, pressure value is ascending to be slowly increased, and until leakage current is basicly stable and no more than 15mA, and is held
Continuous pressure 60s~70s；
5) armoured thermocouple shell is touched using hand, the most hot position of feel is corresponding with the anti-electric fault point of armoured thermocouple.
In a still further embodiment, a kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple, comprising the following steps:
1) armoured thermocouple resistance to voltage is detected using pressure tester；
2) it determines that the resistance to voltage between the two poles of the earth of armoured thermocouple is unqualified, then determines that failure exists；
3) pressure tester is connected on failure the two poles of the earth of the failure armoured thermocouple；
4) equipment is opened, pressure value is ascending to be slowly increased, and until leakage current is basicly stable and no more than 30mA, and is held
Continuous pressure 120s~150s；
5) armoured thermocouple skin temperature situation of change is observed using thermal infrared imager, temperature rises most fast position and armouring
The anti-electric fault point of thermocouple is corresponding.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With
It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection scope of invention.
Claims (10)
1. a kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple, which comprises the following steps:
1) armoured thermocouple resistance to voltage is detected；
If 2) armoured thermocouple resistance to voltage is unqualified, determining armoured thermocouple, there are failures；
3) voltage is applied to failure the two poles of the earth of the failure armoured thermocouple, pressure value is ascending to be slowly increased；
4) it detects the failure armoured thermocouple and applies the leakage current generated after voltage at failure the two poles of the earth；
5) after detecting leakage current, determine that temperature rises most fast position on shell；
6) the anti-electric fault point of armoured thermocouple is determined according to the position.
2. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the step
It 3) further comprise failure the two poles of the earth that voltage application device is connected to the failure armoured thermocouple, to the failure armouring heat
Failure the two poles of the earth of galvanic couple apply voltage.
3. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as claimed in claim 2, which is characterized in that the step
It 3) further comprise failure the two poles of the earth that the pressure unit of pressure tester is connected to the failure armoured thermocouple, to the failure
Failure the two poles of the earth of armoured thermocouple apply voltage.
4. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the step
It 4) further comprise failure the two poles of the earth that current detection means is connected to the failure armoured thermocouple, to detect the failure armouring
Thermocouple applies the leakage current generated after voltage at failure the two poles of the earth.
5. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as claimed in claim 4, which is characterized in that the step
It 4) further comprise failure the two poles of the earth that the current detecting part of pressure tester is connected to the failure armoured thermocouple, to detect
It states failure armoured thermocouple and applies the leakage current generated after voltage at failure the two poles of the earth.
6. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the step
It 5) further comprise, using thermal infrared imager or temperature sensing device, detecting armoured thermocouple skin temperature situation of change, according to
The situation of change determines that temperature rises most fast position on shell.
7. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the electric leakage
Stream is not more than 30mA, and the pressure duration is 5s~120s.
8. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the electric leakage
Stream is not more than 20mA, and the pressure duration is 5s~120s.
9. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the electric leakage
Stream is not more than 8mA, and press duration 10s~20s.
10. the method for rapidly positioning of the anti-electric fault point of armoured thermocouple as described in claim 1, which is characterized in that the leakage
Electric current is not more than 10mA, and press duration 30s~50s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491765.4A CN109709450A (en) | 2018-12-07 | 2018-12-07 | A kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491765.4A CN109709450A (en) | 2018-12-07 | 2018-12-07 | A kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple |
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| CN109709450A true CN109709450A (en) | 2019-05-03 |
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| CN201811491765.4A Pending CN109709450A (en) | 2018-12-07 | 2018-12-07 | A kind of method for rapidly positioning of the anti-electric fault point of armoured thermocouple |
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|---|---|---|---|---|
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| CN201314845Y (en) * | 2008-12-19 | 2009-09-23 | 安徽鑫国仪表有限公司 | Armored multi-point thermocouple |
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